W83626F Datasheet, PDF (3/34 Pages) Winbond – LPC-to-ISA Bridge

LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
GENERAL DESCRIPTION
W83626F/W83626D is a transparent LPC-to-ISA bus conversion IC.
For the new generation Intel chipset Camino and Whitney, SiS Super South 960,
featuring LPC bus, there is no support for ISA bus and slots. However the demand of
ISA devices still exist. For such case, W83626F is the best companion solution for the
non-ISA chipset. Also the packages of W83626F had been chosen to be the most
economic solution for save the M/B board layout size and cost.
For the new generation chipset featuring LPC interface and support no ISA bus,
W83627HF (Winbond LPC I/O) together with the set of W83626F is the complete
solution.
FEATURES
LPC to ISA Bridge
• Meet LPC Spec. 1.1
• Support LDRQ# (LPC DMA), SERIRQ (serial IRQ)
• Full ISA Bus Support except ISA Bus Masters
• 5V ISA and 3.3V LPC interfaces
• All Software Transparent
• IRQ Serializer for ISA Parallel IRQ transfer to Serial IRQ
• Supports 3 fully ISA Compatible Slots without Buffering
• LPC Bus at 33MHz
• Supports Programmable ISA Bus Divide the PCI Clock into 3 or 4
• All ISA Signals can be Isolate
• 14.318MHz in to generate two 14.318MHz buffer out and one 24.576MHz
• Specific Keyboard Functions supported
• Support 8 programmable general purpose I/O pins
• Supports Configuration registers for programming performance
PACKAGE
• 128-pin PQFP for W83626F
Publication Release Date: Feb 2000
-1-
Revision 0.50